Home / 128,455,726.77-177,269,077.13-69,718,393.71

Finding the Fourth Proportional to 128,455,726.77, 177,269,077.13 and 69,718,393.71

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Solution

The fourth proportional to 128,455,726.77, 177,269,077.13 and 69,718,393.71 is: 96,211,477.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,455,726.77 : 177,269,077.13 = 69,718,393.71 : x
  2. Step 2: Convert to fraction form
    128,455,726.77/177,269,077.13 = 69,718,393.71/x
  3. Step 3: Cross multiply
    128,455,726.77x = 177,269,077.13 × 69,718,393.71
  4. Step 4: Simplify right side
    128,455,726.77x = 12,358,915,311,609,104
  5. Step 5: Solve for x
    x = 12,358,915,311,609,104/128,455,726.77
  6. Step 6: Final answer
    x = 96,211,477.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.